Effects of multiple ovulation and litter size on maternal and foetal physiology: prenatal and postnatal consequences

Geoffrey Hinch

Effects of multiple ovulation and litter size on maternal and foetal physiology: prenatal and postnatal consequences

Geoffrey Hinch

School of Environmental & Rural Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This review examines the consequences of large litter size on the physiology of the ewe and lamb and subsequent reproductive efficiency, and highlights that there are major difficulties in managing litters of more than two lambs. The paper addresses the impact of high ovulation rates on subsequent embryo loss, and on placental and foetal development. It identifies that increases in eggs shed are linked to increases in embryo and foetal mortality and also with reduced placental capacity per lamb. The review reports that increased litter size also impacts on ewe energy reserves, particularly in late pregnancy when there is also a reduction in alimentary tract weight in ewes carrying three or more lambs. The postpartum outcomes of high litter size are also seen in reduced neonatal survival and lower colostrum and milk availability per lamb.

Original language	English
Title of host publication	Use of the FecB (Booroola) gene in sheep-breeding programs: Proceedings of the Helen Newton Turner Memorial International Workshop held in Pune, Maharashtra, India, 10-12 November 2008
Editors	S W Walkden-Brown, JHJ van der Werf, C Nimbkar, VS Gupta
Place of Publication	Canberra, Australia
Publisher	Australian Centre for International Agricultural Research (ACIAR)
Pages	64-74
ISBN (Print)	9781921615559, 9781921615566
Publication status	Published - 31 Dec 2009
Event	Helen Newton Turner Memorial International Workshop - Pune, India Duration: 10 Nov 2008 → 12 Nov 2008

Conference

Conference	Helen Newton Turner Memorial International Workshop
City	Pune, India
Period	10/11/08 → 12/11/08

Keywords

Animal Production

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https://hdl.handle.net/1959.11/4044

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Hinch, G. (2009). Effects of multiple ovulation and litter size on maternal and foetal physiology: prenatal and postnatal consequences. In S. W. Walkden-Brown, JHJ. V. D. Werf, C. Nimbkar, & VS. Gupta (Eds.), Use of the FecB (Booroola) gene in sheep-breeding programs: Proceedings of the Helen Newton Turner Memorial International Workshop held in Pune, Maharashtra, India, 10-12 November 2008 (pp. 64-74). Australian Centre for International Agricultural Research (ACIAR). https://hdl.handle.net/1959.11/4044

Hinch, Geoffrey. / Effects of multiple ovulation and litter size on maternal and foetal physiology : prenatal and postnatal consequences. Use of the FecB (Booroola) gene in sheep-breeding programs: Proceedings of the Helen Newton Turner Memorial International Workshop held in Pune, Maharashtra, India, 10-12 November 2008. editor / S W Walkden-Brown ; JHJ van der Werf ; C Nimbkar ; VS Gupta. Canberra, Australia : Australian Centre for International Agricultural Research (ACIAR), 2009. pp. 64-74

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title = "Effects of multiple ovulation and litter size on maternal and foetal physiology: prenatal and postnatal consequences",

abstract = "This review examines the consequences of large litter size on the physiology of the ewe and lamb and subsequent reproductive efficiency, and highlights that there are major difficulties in managing litters of more than two lambs. The paper addresses the impact of high ovulation rates on subsequent embryo loss, and on placental and foetal development. It identifies that increases in eggs shed are linked to increases in embryo and foetal mortality and also with reduced placental capacity per lamb. The review reports that increased litter size also impacts on ewe energy reserves, particularly in late pregnancy when there is also a reduction in alimentary tract weight in ewes carrying three or more lambs. The postpartum outcomes of high litter size are also seen in reduced neonatal survival and lower colostrum and milk availability per lamb.",

keywords = "Animal Production",

author = "Geoffrey Hinch",

year = "2009",

month = dec,

day = "31",

language = "English",

isbn = "9781921615559",

pages = "64--74",

editor = "Walkden-Brown, \{S W\} and Werf, \{JHJ van der\} and C Nimbkar and VS Gupta",

booktitle = "Use of the FecB (Booroola) gene in sheep-breeding programs: Proceedings of the Helen Newton Turner Memorial International Workshop held in Pune, Maharashtra, India, 10-12 November 2008",

publisher = "Australian Centre for International Agricultural Research (ACIAR)",

note = "Helen Newton Turner Memorial International Workshop ; Conference date: 10-11-2008 Through 12-11-2008",

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Hinch, G 2009, Effects of multiple ovulation and litter size on maternal and foetal physiology: prenatal and postnatal consequences. in SW Walkden-Brown, JHJVD Werf, C Nimbkar & VS Gupta (eds), Use of the FecB (Booroola) gene in sheep-breeding programs: Proceedings of the Helen Newton Turner Memorial International Workshop held in Pune, Maharashtra, India, 10-12 November 2008. Australian Centre for International Agricultural Research (ACIAR), Canberra, Australia, pp. 64-74, Helen Newton Turner Memorial International Workshop, Pune, India, 10/11/08. <https://hdl.handle.net/1959.11/4044>

Effects of multiple ovulation and litter size on maternal and foetal physiology: prenatal and postnatal consequences. / Hinch, Geoffrey.
Use of the FecB (Booroola) gene in sheep-breeding programs: Proceedings of the Helen Newton Turner Memorial International Workshop held in Pune, Maharashtra, India, 10-12 November 2008. ed. / S W Walkden-Brown; JHJ van der Werf; C Nimbkar; VS Gupta. Canberra, Australia: Australian Centre for International Agricultural Research (ACIAR), 2009. p. 64-74.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Effects of multiple ovulation and litter size on maternal and foetal physiology

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PY - 2009/12/31

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N2 - This review examines the consequences of large litter size on the physiology of the ewe and lamb and subsequent reproductive efficiency, and highlights that there are major difficulties in managing litters of more than two lambs. The paper addresses the impact of high ovulation rates on subsequent embryo loss, and on placental and foetal development. It identifies that increases in eggs shed are linked to increases in embryo and foetal mortality and also with reduced placental capacity per lamb. The review reports that increased litter size also impacts on ewe energy reserves, particularly in late pregnancy when there is also a reduction in alimentary tract weight in ewes carrying three or more lambs. The postpartum outcomes of high litter size are also seen in reduced neonatal survival and lower colostrum and milk availability per lamb.

AB - This review examines the consequences of large litter size on the physiology of the ewe and lamb and subsequent reproductive efficiency, and highlights that there are major difficulties in managing litters of more than two lambs. The paper addresses the impact of high ovulation rates on subsequent embryo loss, and on placental and foetal development. It identifies that increases in eggs shed are linked to increases in embryo and foetal mortality and also with reduced placental capacity per lamb. The review reports that increased litter size also impacts on ewe energy reserves, particularly in late pregnancy when there is also a reduction in alimentary tract weight in ewes carrying three or more lambs. The postpartum outcomes of high litter size are also seen in reduced neonatal survival and lower colostrum and milk availability per lamb.

KW - Animal Production

M3 - Conference contribution

SN - 9781921615559

SN - 9781921615566

SP - 64

EP - 74

BT - Use of the FecB (Booroola) gene in sheep-breeding programs: Proceedings of the Helen Newton Turner Memorial International Workshop held in Pune, Maharashtra, India, 10-12 November 2008

A2 - Walkden-Brown, S W

A2 - Werf, JHJ van der

A2 - Nimbkar, C

A2 - Gupta, VS

PB - Australian Centre for International Agricultural Research (ACIAR)

CY - Canberra, Australia

Y2 - 10 November 2008 through 12 November 2008

ER -

Hinch G. Effects of multiple ovulation and litter size on maternal and foetal physiology: prenatal and postnatal consequences. In Walkden-Brown SW, Werf JHJVD, Nimbkar C, Gupta VS, editors, Use of the FecB (Booroola) gene in sheep-breeding programs: Proceedings of the Helen Newton Turner Memorial International Workshop held in Pune, Maharashtra, India, 10-12 November 2008. Canberra, Australia: Australian Centre for International Agricultural Research (ACIAR). 2009. p. 64-74

Effects of multiple ovulation and litter size on maternal and foetal physiology: prenatal and postnatal consequences

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